Device for improving combustion.



'FRANK J. DELANY am) ARTHUR n. siarrn, or emesso, I'Liiiivois;

lvices for Improving Combustion, and declare the following to bea full, clear, and

exact description of the same, sucli as will enable others skilled in the art to which it pertains to inake land use the same, refer-4 ence being had to the accompanying drawings, which forni a part of this specification.

It is well known .that the introduction of oxygen into the combustion chambers ofv bustible materials, both solid and gaseous, which4 would otherwise be wasted.` There as, however, been no wideV successful application of this principle to furnaces, beyond the simple expedient of air inlets in furnace ldoors, because ofthe ldifficulty of furnaces insures the combustion of conisecuring, a.. simple reliable" device which would not be `inthe way during the ring operation, or require a reorganization of the furnace; for its installation, or requirecare ful attention, or introduce the oxygen in a cold state and cause the lire to burn less effectively than it would-without the added attachment.4

The object of the present invention is to produce a simple and novel. attachmentA .which may be installed in furnaces without interfering in any way with the construction or operation of the furnaces and will insure an adequate supply of heated oxygen in the combustion chamber and thus produce practically perfect combustion.

A. further 'object of the present invention is to produce a. simple aiiesupplying attachment which is capable ofbeing located and adjusted in a great variety of positions in a furnace so as to lpermit it to be placed in the most advantageous position with respect to the fire in any particular furnace.

A further object of the present invention is to produce a simple airsupplying attach- `nient adapted to be located in part vin the door opening of a furnace and in part in the combustion chamber and to cooperate with the usual air hole in the furnace door to receive outside air and deliver it into the combustion chamber in "a heated state.

The various features of novelty whereby our invention is characterized will hereinn after be pointed out with particularity in DEVICE FOR IMPROVIN G COMBUSTION.

Specification of Letters Patent.

Patented Septl 12, 1916.

Appiitanon inea June ai, 1915. ,seriai No. 35,198.

the claims; but, for afull understanding of Iour invention and ofits objects and advantages. reference mav be had tothe following detailed description taken in connection -with tlfie'acconipanying drawings, where'inz.

Figure l is a. vertical section through a furnace containing our attachment, taken on a plane within the combustion chamber and looking toward the door; Fig.` 2 is a vertical longitudinal section taken through the door approximately on line 2-2 of Fig. 3; Fig. 8 is a horizontal section through the furnace on a plane passing ,through the' door; Fig. 4 is a vertical section on an enlai'ged scale through one of the heat interchangers; and Fig. 5 is an enlarged view, partly in section, of the universal joint be tween one of the. heat interehangers and the air-supplying conduit.

'In the drawings we haveillustrated Aonly a 'Single simple form of our invention. and, foi-"the sake of brevity, we shall confine the detailed description to. this particular einbodiinent; but we desirethat it be clearly understood that our invention is not lim'- ited to this one embodiment but may take various other structural forms. A

Referring to the drawings, l represents a furnace having a door opening, 2, con-v trolled by a door, '3, and leading to the combustion chamber, 4. All these parts may be of any usual or suitable forni and construcf tion. In accordance with our invention, we place a broad shallow conduit, 5, within and at any one of the several sides of the door opening; the inlet end of the conduit communicating with an air chamber, 6, between a plate, 7, and the door to which the'plate is attached. The plate, 7, extends from the side of the'door corresponding to the side of the opening in which the conduit lies, at least past the usual air inlet, 8, inthe door; so that air may enter the inlet, pass through the chamber, 6, and then into the conduit, 5.

The conduit, 5, being shallow, does not appreciably obstruct the door opening and, being supported independently of the door, is not limited in size or shape by the necessity of swinging in and out as the door is closed and opened.

At the inner end of the conduit, and preferably at the corr rs thereof, are heat interof .these heat interchangers 9, 9, each in the form of"a Hat rectangular metal box containing a plurality of longitudinal partitions, 10, so disposed that air lpassing" from the air inlet, 11, at one side to the outlet, 12, at the other side followsy a long zigzag path. Each heat interchanger is connected at its inlet, 11,.to one innercorner of the conduit,

, 5, preferably by a'universal joint, 14, which permits the interchanger toy-be disposed at any desired'angletol the supporting conduit'. The outlets; 12; 'are preferably in the form of -long-ila-rr'ov'v slotswhich permit the air to pass out intothe' combustion chamber in Wide .thin sheets;

Assuming the partsto be adjustedas illus v` tratedin the drawings,"with a re burning in `the furnace: it will 'be seen that the heat interchangers Will' become very hot so that air flowingy into andfthrough the' same, and which is partially heated 'in the chamber 6 and conduit l,")yivillbecoxne highly heated and Willbedischargedinto the combustion' chamber in such condition that it will aid greatlyin the'process of-combustion and can never exert acheckinginfluence on the fire. The ent-'ire ydevice is out of the Wayl While4 fuel is being introduced and While the fire is being stirred and cleaned; :it may be placed above, belowfor `at the' sides 'of the door opening; andwitl may be adjusted'at any angle soaasto secure the best heating eifect on the incoming air :and deliver the air at themost advantageous points aI 1d atthe most advantageous angles.

While We have illustrated and describedA with particularity only a single preferred form of Lour invention, we do not desire to be'limited to the exact structural ldetails thus illlistrated and described; a but intend t0 cover all forms' and arrangements which nitions of our come within the' terms employed in the defi-V invention constituting the appended claims.v 1

' belng We claim: I

1. A device of the character described comprising a conduit adapted to lie in and at one side ofthe door opening of a furnace lbehind the door, heat interchangers at one end of said conduit and atopposite sides thereof-in. losition to lie within the furnace beside the oor opening, said conduit having anair inlet and said heat interchangers hav- -door is closed, said conduit and said chamberhaving registering passages, and heat interchangers connected to the inner end of and Wholly supported by the conduit and lying Within the combustion chamber, said heat interchangers having discharge outlets leading into the combustion chamber.

l 3. The combination with a furnace, of a conduit adapted to be fixed in and at one side of the door opening of the furnace and .behind the furnace door, said furnace door and said conduithaving lregistering passages communicating with the outside atmosphere through the door when the door is closed, anda heatinterchanger lying within the combustion chamber of the furnace and connected to the inner end of and wholly vsupported by said conduit, said heat interchanger having a discharge outlet leading into the combustion chamber. l

In testimony`\vhereof, we sign this specification.

a i FRANK J. DRLANY. ARTHUR H. SMITH.

connected to said conduit by universal 

